<!DOCTYPE html>
<html lang="cn">
<head>
    <meta charset="UTF-8">
    <title>列表</title>
    <style type="text/css">
        li {
            list-style-type: decimal;
        }
    </style>
</head>
<body>
<ul>
    <li>列表项</li>
    <li>列表项</li>
    <li>列表项</li>
</ul>
</body>
</html>